CVE-2025-26199

9.8 CRITICAL

📋 TL;DR

CloudClassroom-PHP-Project v1.0 transmits login passwords over unencrypted HTTP, allowing network-based attackers to intercept credentials via Man-in-the-Middle attacks. This affects all users of the vulnerable version, particularly those on public or shared networks. Captured credentials could lead to unauthorized access and potential remote code execution.

💻 Affected Systems

Products:
  • CloudClassroom-PHP-Project
Versions: v1.0
Operating Systems: Any OS running PHP
Default Config Vulnerable: ⚠️ Yes
Notes: Vulnerability exists in default installation when accessed via HTTP.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attacker captures admin credentials, logs in, uploads malicious files, and achieves remote code execution leading to full system compromise.

🟠

Likely Case

Attacker captures user credentials, gains unauthorized access to accounts, and potentially escalates privileges within the application.

🟢

If Mitigated

With HTTPS enforced, credentials remain encrypted during transmission, preventing interception and limiting attack surface.

🌐 Internet-Facing: HIGH - Publicly accessible instances expose credentials to any network-based attacker.
🏢 Internal Only: MEDIUM - Internal networks still risk credential interception from compromised devices or insider threats.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Exploitation requires network access to intercept traffic; no authentication needed to capture credentials.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Not available

Vendor Advisory: Not available

Restart Required: No

Instructions:

No official patch exists. Implement HTTPS via web server configuration and modify application to enforce secure connections.

🔧 Temporary Workarounds

Enforce HTTPS with Apache

linux

Configure Apache to redirect all HTTP traffic to HTTPS

<VirtualHost *:80>
    ServerName yourdomain.com
    Redirect permanent / https://yourdomain.com/
</VirtualHost>
<VirtualHost *:443>
    ServerName yourdomain.com
    SSLEngine on
    SSLCertificateFile /path/to/cert.pem
    SSLCertificateKeyFile /path/to/key.pem
    # Your existing configuration
</VirtualHost>

Enforce HTTPS with Nginx

linux

Configure Nginx to redirect all HTTP traffic to HTTPS

server {
    listen 80;
    server_name yourdomain.com;
    return 301 https://$server_name$request_uri;
}
server {
    listen 443 ssl;
    server_name yourdomain.com;
    ssl_certificate /path/to/cert.pem;
    ssl_certificate_key /path/to/key.pem;
    # Your existing configuration
}

🧯 If You Can't Patch

  • Deploy application behind a reverse proxy with SSL termination that enforces HTTPS
  • Restrict network access to trusted IP addresses only using firewall rules

🔍 How to Verify

Check if Vulnerable:

Access login page via HTTP, inspect network traffic with tools like Wireshark or Burp Suite to see if password is transmitted in plaintext.

Check Version:

Check application version in source code or configuration files; look for version 1.0 indicators.

Verify Fix Applied:

Attempt to access login page via HTTP - should redirect to HTTPS. Verify password transmission is encrypted in network traffic.

📡 Detection & Monitoring

Log Indicators:

  • Failed login attempts from unexpected IP addresses
  • Successful logins from new locations or IPs
  • Multiple login attempts in short time

Network Indicators:

  • Unencrypted HTTP traffic containing login credentials
  • Suspicious ARP or DNS spoofing activity on network

SIEM Query:

source="web_logs" (method="POST" AND uri="/login" AND protocol="HTTP")

🔗 References

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